2001-2002 Chrysler Prowler Transmission Speed Sensor Guide
If your Prowler is stuck in gear or the speedometer is acting up, a bad transmission speed sensor is a likely culprit.
- Your Prowler has two transmission speed sensors (input and output); it's best to replace both at the same time.
- The most common symptom of failure is the transmission getting stuck in 2nd gear (limp mode).
- This is a simple, low-cost DIY repair that can be done with a 1-1/16" deep socket in under an hour.
- There are no recalls for this part; the repair cost will not be covered by the manufacturer.
Is Your Prowler Stuck in Limp Mode?
A failing transmission speed sensor is one of the most common problems for the 2001-2002 Chrysler Prowler, and it can cause serious driving issues. Because the vehicle's computer relies on these sensors for crucial data, a bad signal can make the car unpredictable or unsafe to drive. The most frequent and alarming symptom is the transmission going into "limp mode," where it gets stuck in second gear to protect itself from damage. You will also likely see a Check Engine Light and notice your speedometer acting erratically or not working at all.
Input vs. Output Sensor
Your Prowler has both an input and an output speed sensor located on the driver's side of the rear transaxle. They look very similar, but may not be interchangeable. A failure in either one can cause nearly identical symptoms, making it difficult to diagnose which one has failed without a proper scan tool. Because of their low cost and the fact they are located next to each other, it is highly recommended to replace both sensors at the same time.
Choosing the Right Aftermarket Speed Sensor
For a specialty vehicle like the Prowler, the quality of electronic parts matters. While OEM Mopar sensors are an option, several aftermarket brands offer reliable replacements that meet or exceed original specifications. Given the straightforward nature of this part, a standard aftermarket "Replacement" brand sensor is a cost-effective and dependable solution for this common Prowler issue. Since the sensors have aged together, replacing them in pairs is the best practice to avoid repeating the repair in the near future.
| Part Type | Estimated Cost (Per Sensor) |
|---|---|
| New Aftermarket | $22.47 - $24.85 |
| Shop Labor | $80 - $120 |
Pro Tip: Replacing both speed sensors is a simple DIY job that takes less than an hour with basic tools, primarily a 1-1/16" deep socket. Doing it yourself can save you the entire cost of labor.
Frequently Asked Questions
Where are the speed sensors located on my Prowler?
Both the input and output speed sensors are located on the driver's side of the rear-mounted transaxle. You can access them from the back of the vehicle. The output sensor is typically easier to see, with the input sensor located a bit further in.
Is this a difficult repair to do myself?
No, this is a very DIY-friendly job. The sensors are held in by one bolt and an electrical connector. The process involves safely raising the rear of the vehicle, unplugging the electrical connector, unscrewing the sensor with a 1-1/16" deep socket, and installing the new one. Be careful not to overtighten the new plastic sensors.
Do I really need to replace both sensors?
It is strongly recommended. The sensors are the same age and have endured the same conditions. If one has failed, the other may not be far behind. Given the low cost of the parts, replacing both at once saves you from having to do the job a second time.
Are there any recalls for the Prowler's speed sensors?
No, there have been no recalls issued by the NHTSA for the transmission speed sensors on the 2001-2002 Chrysler Prowler. This is a repair you will have to pay for yourself.
What happens if I don't replace a bad speed sensor?
You should not ignore this problem. Your Prowler will be stuck in second gear, making it slow and unsafe for most roads. This also puts extra strain on the transmission. You will also have an unreliable speedometer and no cruise control.
Technical Specifications
OEM Part Numbers: 4800878 4800879
The 2001-2002 Prowler uses two sensors on the 42LE transaxle: an input sensor (ISS) and an output sensor (OSS).
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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